I've vaped quite a bit indoors around non-smoking friends and they say it either doesn't smell at all, or smells faintly like whatever flavor I'm vaping (eg caramel.)
Only one person didn't much like the smell, she said it reminded her of faint cigar smoke, but said the odor didn't linger at all.
Only one person didn't much like the smell, she said it reminded her of faint cigar smoke, but said the odor didn't linger at all.