It isn't necessary that the majority of the population hates it. Just a sizeable portion like 20% is enough. Also the puzzling thing is the stark disparity of

It isn't necessary that the majority of the population hates it. Just a sizeable portion like 20% is enough. Also the puzzling thing is the stark disparity of the perception of the smell between different people. That doesn't happen to, say, seeing. This is akin to having a dress where half the people says it's black while the rest say it's white.