from what i know, it's a psychological thing..
coz my mad aunt, if she doesn't know there's meat products will
happily eat the food... if she knows, she'll say it has a "weird
smell" and all that.. and become "ill"
after many years and after she developed a very pronounced
dowager's hump, she's getting healthier again by eating some fish..
but she's still on that "meat has a weird smell" thing... after a
few decades of believing that, it's hard to get away from it..
btw... the human body is meant to eat everything.. and needs
everything to be healthy.. that means fruit, grain, red meats,
white meats, fat.. the whole spectrum... we're omnivores.. by
rebelling against that, the body collapses eventually even if it
seems healthy now, it could be through sheer will.. and that cannot
last forever...