I have a 3 year old house and I have a bad smell in my laundry room. It smells like dirty water.I dont think its my washing michine. Its a Kenmore and only 5 or6 years old. My clothes dont smell bad after being washed. Theres no standing water in the michine. I do have a trap in the basement for the stand pipe. I dont know if its a venting problem. I do get little flies in the summer time in my bathrooms Could the water be getting pulled out of the traps??