There are a couple issues with the current standpipe setup. From the pictures I clearly don't have a p trap. Based on the sewer line being vertical and about 4 feet from the ground I don't know how to do it so it is to code. So one issue is the smell, not too concerned because it's very mild, but I know a p trap would help. My other more concerning issue is the constant breeze that I get into the basement. The negative degree weather is really making it worse. I attached pictures of the setup hoping to get some sort of resolution. Thank you in advance for the help.