My dog threw up in the heater air vent

It’s been raining every single day this week and our dogs dislike to go outside when it rains. There is a immense puddle of water outside of the apartment and their feet get wet every time they have to go outside to use the lavatory. One of our dogs was throwing up a couple of afternoons ago, however i didn’t know why the dog was sick. I didn’t easily supply him anything weird in her yearly diet except a couple of weird dog treats that I obtained on sale for christmas. I sincerely didn’t guess that dog treats could be the reason why her stomach was upset, because they contain sweet potatoes, cinnamon, and oatmeal. These are proper ingredients in dog treats and ingredients that I use every single day in the house. One of the afternoons when the dog was sick, she threw up in the furnace register. I have registers to the furnace on the floor and the dog threw up right inside of one. I had to detach the register cover and disinfect out the inside of the ducting. It was completely disgusting because of the dirt and dog hair that was already inside of the register. After the dog threw up, she laid down on the floor and she seemed to be completely fine, and she didn’t throw up someplace else the rest of the day, however unluckyly, the next day all of the dogs had diarrhea. If there is anything worse than a dog throwing up, it is a dog that consistently has to go to the lavatory when it is raining outside.