As are the spray fans. I really dislike being beside a child/adult with these spray fans who end up spraying me as well (accidental and on purpose). Adults it may be accidental to spray someone in line behind you. Kids often start spray wars spraying each other and others in line fall victim.
I was hit with sunscreen in line once. Someone decided standing in line was the perfect time to refresh their spray sunscreen. Hit me on the arm, but him my son in the eye.
Just don't spray anything in line.