I’ve lived in roach infested regions and encountered many. But never smelled them. Are you holding them up to your nose? I’m not sure I ever got closer than ~50cm from one. I wonder if you have an extra sensitive olfactory sense.
In any case, the odor could be a defense mechanism perhaps sucreted and maybe not in the milk. The smell of fish is off putting to me but I can eat a fresh prepared white fish because the odor of the meat is fine.
Yeah we do eat some disgusting things. What works on me is if you start feeding it to me before I know what it is. Then after I’m accustomed to something it takes a higher level of disgust to turn me.
Hot dogs in fact crossed that threshold. I ate them as a kid then one day questioned what they were, heard John Candy call them lips and assholes, saw a video of that pink slime in big vats, and that turned me. No more hot dogs for me. OTOH, I had a quite tasty vegan hotdog that was good at simulating the real thing using nuts.
I’ve mostly ditched dairy milk out of a combination of mild disgust coupled with better alternatives (coconut milk). I’ll do Bailley’s but pass on the milk stout beers.
Anyway, you can feed bugs and cockroach milk to your kids and maybe they grow up accustomed to it.