20+ Bathroom Sewer Smell When It Rains Background. When it rains, this can amplify the situation by pushing gases out. Usually, a floor drain can be found in a bathroom or kitchen.
Have you ever wondered about what causes the distinct smells you detect in the air before, during and after a rainfall? That little bit of water is. Optionally, if you are on the roof take a whiff off one of the dwv stacks (aka the stink pipe).
There was no sewer smell until the weather got cold in december.
Sewer has a very distinct odor. When it rains, this can amplify the situation by pushing gases out. As it rises it will escape into the bathroom and collect inside the home. Sewer smells in bathrooms can be a serious problem, not just because of the horrific smell, but also because such a smell is a good sign that there is a plumbing problem.