What happens if you dont have p-trap in your kitchen sink but you have a grease trap interceptor?

Answer 1

I'm not a professional plumber, but fairly experienced with Plumbing. From what I understand, a p-trap allows for a small pool of water that acts as a barrier between the nasty stuff down your drain, ie. poisonous gases and smells. It also can catch bigger stuff that shouldn't be going down the drain and block it in a generally easily accessible spot, versus clogging up further down the line. It is certainly required by plumbing codes and should the sewer/septic gases build up they can cause illness/death or cause an explosion.

Answer 2

Get use to smell of sewer gases, or install p-trap under kitchen sink.