I think you should just ignore it , too, but I have another perspective to bring. Why not look at it, and speak of it, and think of it, as you-related rather than him-related?
By which I mean, you’re unusually sensitive to odors. I have no idea if you are or not, but framing it like that makes it much less a personal criticism of his hygiene than it is a self-assessment of your own peculiarities, and much easier to discuss with him, if you were so inclined (and I DON’T think this is something you need to discuss with him, under these circumstances.) Either way, you can’t take his smell and would need him to shower more frequently, apply much more deodorant, etc. to be comfortable in his company, but this would be a far more tactful way to raise the subject, and may even be more accurate.
FTR, I once had a girlfriend who told me that I stunk. I had a hard time with this, in part because my previous girlfriend would make fun of me for my insisting that I needed to shower sometimes before getting into bed with her. “I like the way you smell,” she would tell me. “You smell like a man.”
“Yeah, a man who’s just played basketball for two hours,” I would say. “I’ll be two minutes in the shower. Wait right here,” and she would, but only after a little eye-rolling, and sometims a muttered 'Finicky bastard." Sometimes I’d get back to her after that two-minute shower, and she would complain that now I smelled like a girl, so when my next GF complained that I smelled, with no real change in my hygiene habits, I got to see how totally subjective such judgments were. If my newer GF would have told me that it was her sensitivity, I still would have paid closer attention to my showering and deodorizing frequency but I wouldn’t have felt so fundamentally put down as when she told me that she thought that my hygiene was sub-standard.
Further FTR, I have broken up with women because they smelled funny, though I was looking to break up with them anyway, and that was just a bonus to me. The truth was that I didn;t care for the way they smelled, but why should I put it on them, when it could just have been that I like the way some women smell better than I like the way others smell? No judgment. I like what I like.