“Rude. Between the hot tub rooms and the explosions, I haven’t had a lot of time for personal hygiene.” It’s just an excuse and Tony knows it enough to send him to the bathroom with a packaged toothbrush he’d brought with him and a parting remark, said under his breath, that Bruce doesn’t smell like roses either.

Tony takes some time to get himself right, which requires a lot more than just s teeth cleaning and that will provide Bruce some time alone with his new body.

Tony can’t break with his amusement of the whole thing, though.

Having a genuine conversation with the Hulk-body thst ends with a suggestion of being more liberal with his toothcare just tickles him pink.

So if Bruce hears him laughing to himself over the water? Well. He is.