My daughter is only 3 yrs old and she has a habbit of sniffing book pages is this normal in kids? I searched it up on google and google is saying its a sign of autism but she is very clever for her age and loves socialising she is a very confident child. I personally don’t think she’s autistic and her key worker hasn’t mentioned anything either.

Could this indicate some type of deficiency? E.g eating chalk = nutritional deficiency etc