no wonder why

my parents house smells. They are out of town and I opened the dishwasher and ta-da it's filled with water that smells super bad. I'm hoping I fixed it. I had to remove the basket trap thing and I found plastic covering the vent. So fingers crossed I fixed because it smells up the whole house. and it would be my 1st time fixing a dishwasher! LOL waiting for it to stop so I can check it.