huffing

(noun) an act of forcible exhalation. Synonyms: puffing, snorting.

(verb) inhale recreational drugs. Synonyms: huff, snort. Examples: "The addict was snorting cocaine almost every day." "The kids were huffing glue."

(verb) blow hard and loudly. Synonyms: puff, huff, chuff. Example: "He huffed and puffed as he made his way up the mountain."