If possible, boil the water in the sink or bucket. When suds appear, add a squirt of dish soap and quarter-cup baking soda and stir with a utensil. The vent should be cleaned with hot water and cleaner. If you have a vent, submerge it in the solution for at least 10 minutes.
Let's Get It Fixed!
HomeX virtual experts will assess your issue (for free!) and can resolve simple problems.