Can you get in helmet air fresheners? Had sardines and pickled onions for lunch. Went for a quick afternoon ride and came upon a humped back bridge which elicited a belch, followed smartly by a nauseating assault on the olfactory organ and an ensuing wretching action. The ensuing wobbulation could be considered to be unsightly if not downright dangerous. Just wondered whether anyone has spotted a suitable product?
I used to always have an air freshener on my bike, when people asked if it worked I told them it got rid of the smell from catalytic converters from cars in front. Nobody ever queried that.