I don't mean accidentally bumping wheel with a finger, but it not triggering. That should not happen. As for accidentially jumping, it's own fault. There are finer motor skills to craft, than just not sticking finger where it does not belong.
p.s. I think I had mouse once that wheel had problem like that many years ago.(although I'm not sure, for it might have been just hyper senstivie wheel meeting my finger all along) I'd expect for this issue to be long since solved for gaming mouses at this point.