Owners freak out and pry their pet's mouth open the second they hear chewing.Does this ever happen to you when your pet starts chewing something out of nowhere?

My 1.5 years old bichon loves to stick his head the corner of the leather couch on either side and breathe in there for 10+ minutes. He is not licking anything and there is nothing in the crevices of the cushions. Is he getting high?