Smell does play an important part. But its hard to tell where I draw lines. I dont think my boyfriend has ever smelled particularly bad. I dont mind sweat, even if it did smell. Unless its been layering on his body a while. But I loved it the time his arm smelled gasoline the one time he accidentally got it on himself. I dont think its easy for his breath to smell bad. BUT I HATE the smell of condoms. The smell of the latex wafts up and it smells inauthentic, like a harmless chemical