I taste bad?

Guys I think my body tastes bad. Whenever my partner kisses or licks my chest/nipples, his mouth subsequently tastes pretty raw. Kind of like onions. I’m generally very clean, showering at least daily (more if I hit the gym or otherwise get sweaty), so I don’t think it’s a hygiene issue. Anyone dealt with something like this? For now I’m telling my partner to lay off the licks, but that’s kind of a bummer solution!