Pica and smells

Hi all. Anxiety has been super high and from reading online I think what I've always had is pica or sensory seeking? I've always chewed toweling fabric! I'll chew it until it falls appart. Worse at times and now I think its anxiety causing me to crave it more and more. 

Anyway wondering how I overcome this?

As a kid I was addicted to furniture polish, I'd spray it onto a duster and smell it for ages. Then I found out the harm and stopped thank fully! Luckily I was okay. I'm craving strong smells again lately. I'm worried that the polish craving will come back. Is this also sensory seeking?

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