What does it mean if smoke enters my home/business/other building?

You should not see smoke in your home/business/other building provided that your plumbing is installed and functioning properly, and provided “traps” are filled with water.

If smoke enters your home during the test, it may indicate there are deficiencies in the plumbing on your property. You should contact a plumber as soon as possible and have the situation evaluated as a leak may allow potentially dangerous sewer gas to enter your building.