Folding Nut low and Nut low draws

[Usagi_yo]

Question for Omaha 8/b pot limit players.

I find myself throwing away nut low only hands in 3 way showdowns where heavy action is likely to take place.

Example would be I have nut low, first to act and I suspect one player behind me has nut low, and the other has nut high, or the high.

I usually check fold when either player puts a pot sized bet out, and particularly when there is a bet, then a raise.

Am I losing anything here?

Second question is, often I find myself with a nut low draw only, with no backup draw. I throw these away too.

An example would be I have Ac2c4d9d and the board is 7h8hKd, heads up facing a pot sized bet, I tend to throw this hand away. Had I something like Ac2c4dKs to go along with that board I'll certainly play.

Am I losing anything here?