It is possible but not likely. Apparently you normally lose you sense of smell as it makes it way up the nerves that are involved in smell.

http://en.wikipedia.org/wiki/Primary_amo...

If the pool is properly maintained, it cannot survive in it.

Last night me and my cousins went swimming. The pool was fairly warm, and we live in Arizona. I went underwater, and it went up my nose. I'm not sure if the pool was chlorinated, but We live in an apartment complex. Now, I have a small headache. Can I get the brain eating amoeba!?