How do I deal with my chewing phobia?

Im only 13 years old, and i think i have a complete chewing phobia. When people chew with there mouth open, or smack their lips while chewing, it drives me insane! What makes my life hard is my dad does this every time he chews, its gotten so bad, ive had meltdowns at the table, and ran out. i cannot eat with him anymore. Do i need treatment to get rid of this? How do i get over this so i can just eat with my dad again?