Can he be more specific on "not that pleasant"?

It could be just because things are more moist and leaky (sorry TMI) down that way at the moment that has made it smell a bit different? But if it smells like something specific there are other things it could be.

ETA: DP has just informed me that things do "smell very different down there" when pregnant vs non-pregnant and he does prefer non-pregnant (but not enough not to offer to check again for me before posting )