What Causes One To Become Extremely Sensitive To Odours?

I have become extremely aware of ordors. I can smell what I ate at my last meal in my urine and my poop. Also I smell bad ordors everywhere. I wonder if this could be coming from my body. I shower daily and use deorant and body lotion. people stink and have bad breath amd I smell onions and cigarete smoke makes me want to vomit,. It happens so often that I wonder if it is me. Also I smell ordors all over my house. I clean with clorox and antibactrial cleaners but cant find where the ordors are coming from. I also get gas just about after every time I eat until I have diarehera. I don t understand what is happenig.Does any of this make sense to you?Thank you. Marie