Small amounts don't smell at all. The only time I can really smell it is if a horse is drenched with it. I used it as part of a mixture of a leg tightener, it doesn't smell at all and I apply it with my bare hands, I can't smell/taste it either. Maybe its me, but even with an unopened bottle I can only smell it if I literally get quite close to have a whiff (my first experience with DMSO! lol!)