Food intolerances and environmental sensitivities

These are ALL related.

Autistic Individuals have 2 mechanisms which NT individuals lack. WE ARE human tools of calculation who naturally possess the ability to recognise health and safety factors.

Mechanism 1: Neurology has discovered different oscillations in the Beta band which is related to our Sense Perception. Think of a sound wave (we use water as an analogy to Sound), a larger sound wave penetrates more dense elements. Thus when someone drives by with a massive Bass booming from their car, we can feel that sound wave in our bones. I don't understand the capacity of what our brain waves can do, but if we're set to a different frequency, we cannot just 'adjust' or accept or ignore a sense perception. 

Mechanism 2: Psychoanalysis has found that NeuroTypical individuals (Neurotic Individuals) are capable of supressing something which is irritating their senses and ignoring it through a social code they receive and integrate in to their thinking and reasoning from a very young age. This code comes from language and their ability to collect or receive it and understand/integrate it. 

Everything you are finding your physiology responding negatively to in the list above are Elements which are not Human-Friendly. Our Senses are supposed to be used to calculate health and safety issues. What we might lack is the education to understand why these are not good for humans. 

A few key items to note:

Food sources which come from mineral-depleted ground can lack proper nutrition. I'd do a quick search on how a plant grows, where it collects nutrition, how it can be contaminated with other plant-life and how that impacts the human body. Stuff one should've learned in Jr. High Science class. 

Similarly, if you eat meat, what that animal has ingested (such as toxins in oysters or grass-fed vs corn-fed cows), will be part of what the human is exposed to. This is more keenly understood with problems such as mad cow disease. So, it could be good to try organic eggs to double check you're biology isn't simply allergic to eggs, which can also be the case.

Moving on:

Rubber. Is not always 100% Rubber from a tree. I'm not sure WHY companies get away with confusing Vinyl or Tar for Rubber, but it's maddening. If it's off-gassing, it's a byproduct of the petroleum industry, not from a plant.

Bonfires: Some Trees are good for Kindling, Some for Burning to keep warm. A search on why some trees should not be burned will help. Never burn poison ivy or Oleander.

Pest Sprays, Candles and Fragrances: ALL of these contain unnatural chemicals which the human body should never breathe in. Again, how this legal is beyond me. Here's an alternative:

A house can be cleaned with baking soda, vinegar and activated charcoal. Essential Oils / Natural extracts such as Tea Tree oil, Lavender and Citrus oils are naturally anti-bacterial. Cedar oil kills moths, Peppermint repels spiders, a combination of citrus, eucalyptus and lavender diluted in water will repel mosquitos. This is another Rabbit Hole of investigation but a fun one!

Environmental Safety is important. Everything you've listed is not Human Friendly but autistic individuals are the ones who notice this predominantly. NeuroTypical individuals ARE affected, but cannot seem to make the connexion because they innately suppress the immediate cause and effect. For instance, they'll just end up with cancer between 40-80 and not know why. Our biology will always reap the consequence when it comes to assault from unnatural elements. 

I use Doctor Bronners for cleaning or a low percent hydrogen peroxide solution. Do not mix hydrogen peroxide and chlorine as it's DEADLY. 

Further Reading: autcollab.org/.../

I do think it’s likely that autistic people are much more sensitive to these things. I tend to have issues with prescription  drugs  - I almost always react badly to them. 
I also hate artificial chemicals and cleaners - I can’t STAND the way they smell. Like you I use essential oils a lot and also bicarbonate of soda and vinegar for cleaning. I have little bottles of essential oil all over the place - they’re so useful for so many things. And of course they smell wonderful and can be really calming and grounding. It’s a good idea to make sure you’re buying 100% natural oils - not blends that might have other things in. The pure oils are expensive but they’re very concentrated and they last for ages - so worth the investment. 

I do think it’s likely that autistic people are much more sensitive to these things. I tend to have issues with prescription  drugs  - I almost always react badly to them. 
I also hate artificial chemicals and cleaners - I can’t STAND the way they smell. Like you I use essential oils a lot and also bicarbonate of soda and vinegar for cleaning. I have little bottles of essential oil all over the place - they’re so useful for so many things. And of course they smell wonderful and can be really calming and grounding. It’s a good idea to make sure you’re buying 100% natural oils - not blends that might have other things in. The pure oils are expensive but they’re very concentrated and they last for ages - so worth the investment.