Wow everyone, thanks for your replies!
Anne-Marie: I sniffed the SRR out of the bottle and to be perfectly honest, it smells fine, just the way I'd expect it to. So I don't understand why it would be fine out of the bottle but nonexistent in my M&P. The only thing I can think of is that I possibly overheated the base, but I use the same heating procedure for every 4oz bar I make, and all of them came out just fine except for this one bar. It's strange. I'm going to use the scent for something else and see how it comes out.
Magic Hands: Thanks for the heads up on the "scent problem" that some people have. I've never heard of that. I've never had a problem with smelling something as far as I know, but I'll keep that thought in mind.
No, I don't smoke and I'm neither pregnant nor hormonal (okay, that last one might be debatable!). Though yes you're right Anne-Marie, when I was pregnant with my daughter I couldn't STAND the smell of my basil plants (which I normally love and cultivate). I let them all die because I couldn't even go outside to water them; one whiff of the surrounding air made me completely nauseous. Thankfully I went back to loving the basil!