Don't know if I am being unreasonable or not, as I have Misophonia, and eating/chewing sounds are one of my triggers.
OH eats with his mouth open, and makes so much noise it's unbelievable! I asked him before (nicely) if he could try and keep his mouth closed as the children copied him, but he denies he even does it 
Even eating toast or something not crunchy annoys me!
And I refuse to buy magnums for him as the noise is just something else!
I was taught it's bad manners to eat with your mouth open, and the noise is horrible and I don't want to see partly chewed food thank you.
Please tell me I'm not being unreasonable 