noun
anti-smoker; person who dislikes smoking
Often used for someone who actively avoids or opposes smoking, not just a mild preference. The term can carry a slightly militant or activist connotation, but is also used neutrally.
See also: 愛煙家
彼は嫌煙家で、タバコの煙が大嫌いだ。
He is an anti-smoker and hates cigarette smoke.
最近、嫌煙家が増えている。
Recently, the number of anti-smokers has been increasing.