Oh, my… the question of how to properly punctuate sexual desire is indeed a tricky (and damn funny) one. Here’s a tidbit:
Technically, you could fix this with a semicolon….
“You smell so good; it’s making me stupid.”
In some ways this is the right thing to do. A semicolon is the official way to show two independent clauses have a close relationship to each other.
Here’s the problem: Semicolons are for wankers. Seriously. You can go your whole life without ever needing to really use a semicolon.
Unless you’re an academic, of course. If you’re an academic, you’ve got to use semicolon to impress other wankers with how much of a wanker you are so you can get your paper published. You know, that paper you wrote detailing your in-depth Marxist interpretation of the last eight lines of John Donne’s “The Flea?” The paper where you used the word “moreover” twenty-seven times in eleven pages?
Most importantly, a semicolon looks really strange in a piece of casual dialogue. People don’t speak using semicolons. Unless they’re wankers.
I love semicolons… but colons are even more fabulously wankerish!