Onions make me burp and I can’t stop them?

sorry if this is a gross one, just skip it if it disturbs you. i used to think i was unable to burp. there is an actual condition for inability to burp. i never burped until i turned 22. sometimes i felt something small stuck in my chest but it always turned into a gurgle or hiccup and went away. maybe i did have that condition and i don’t anymore, i’m not sure. now, here’s the problem: the only thing that makes me burp is onions, especially spring onions and maybe it’s because i’ve gained this ability recently or maybe this is how it’s supposed to be but i can’t feel the burp coming. it causes me to burp in inappropriate situations and unlike the small things i used to get stuck in my chest, these are quite big. i get really embarrassed when it happens. is there a way of feeling the burp come up and stopping it?
Onions make me burp and I can’t stop them?
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