It's not just the sight of a hot chick that can put a guy in the mood: There's the sound of sexily murmured suggestions, the touch of soft female skin, the scent of ... rotten eggs?

A newly published study suggests that hydrogen sulfide -- the gas with the distinctive odor that's found in rotten eggs, car exhaust and flatulence -- may play a key role in helping dudes come out of their shell, so to speak.

Italian scientists performing research on the discarded members of eight sex-change patients discovered the noxious compound inside the nerve cells that control the flow of blood into the penis: i.e., that dictate how good the wood. Since a previous revelation that another gas, nitrous oxide, was involved in the erection process led to the development of Viagra, researchers believe this new finding could pave the way for an alternative penile pick-me-up, one that would be a godsend for the one-third of men who don't respond to the popular blue pill.

Until that happens, though, we absolutely don't recommend attempting to excuse any accidental bedroom blow-offs as a key element in the foreplay process.