We don’t know yet since the author decides XD Some omegaverse say they can some say they can’t kookychimmy
chowon stated before that he didn't need a condom with kyungsoo. + betas in the story are basically normal people so ig it doesn't matter whether chowon is an omega or not, he's still male and mxm cant reproduce
I feel like chowon is pregnant, i don't know i just have a good gutfeelong about him being pregnant with how moody he is this chapter