yes, similar to gf-withdrawal, but harder to pin down, iyswim.
The soap/shampoo on ewas obvious- she used to sceam and scream while we were washing her, and when we switched to smell-free, chemical free she was a lot calmer (still didn't like the water, mind, or the washing, but not actually hysterical)
toothpaste came about due to me reading up on it, but when we removed it, we had the usuall few days of come-down reaction.
I couldn't swear anyhting about household chemicals, but it does seem to add stuff in - if I am having a huge blitz on the kitchen for eg, and she is about, then she can get really antsy and anxious. red-cheeked, stimming etc.
and the same if we use suncream, or lotionsof any kind actually -you know, moisturisers etc. she gets typical reactions (not skin rashes, etc, but red cheeks, black circles under eyes, sweaty overnight etc) and gets abit more incoherent with speech, etc. seems to struggle to communicate stuff that she would usually do with ease, or goes back to shrieking/moaning/whining about stuff (I make her sound so pleasant! ) instead of interacting properly.
but it does make you sound like a total loon when you're trying to convince pre-school sheneds her own soap, doesn't use suncream ("oh but she has lovely organic cotton kaftans - she's well covered up"), etc etc.one more thing to mark you out, iyswim
I also just thought about it a lot, and realised I was going ot a lot of trouble to not put anything other than real food into her, and then was slathering her with all sorts of stuff designed ot be absorbed by the skin... and I already knew she didn't deal with stuff in the same way most do (injections etc)