The most common odor in commercial beer and craft beer is the smelly “Light-struck” flavor and aroma. It can make your beer emit a strong smell (it feels like a skunk) and make it unpleasant to drink.

The peculiar smell in beer has always been a headache for brewers, although some peculiar smells are characteristic in some beer styles. But acetaldehyde is a special taste, because it may cause you to have a hangover, which is very detrimental to your health.

The presence of hydrogen sulfide (H2S) in beer will give the beer a unique smell of rotten eggs. In some beer styles, a small amount of hydrogen sulfide will form a unique flavor in the beer. But, if beer contains more hydrogen sulfide, the beer may produce a pungent rotten egg flavor, which is not