Had an American friend send some chocolate and sweets over and Hershey were one of them. Your description is the same as mine

Hershey’s literally tastes like vomit. And I’m not being hyperbolic with the literally. It genuinely does.

It's science:

Readers who have had the misfortune to encounter a Hershey bar will know exactly what I’m talking about. It’s wretched stuff isn’t it? If you are in possession of a sound mind and a few functioning taste buds then I don’t see how you can possibly enjoy US chocolate. It tastes like sawdust that’s been drowned in sugar and soaked with baby vomit.

It tastes like that, by the way, because that’s roughly what it is. American chocolate (I’m talking about the non-fancy stuff) has a lot more sugar and a lot less cocoa than its European counterparts. Some producers also allegedly put their milk through a process called controlled lipolysis which produces butyric acid. What’s that when it’s at home? It’s something that’s found in vomit. God knows what else Americans get up to in their chocolate factories. A lawsuit recently filed in New York alleges that Hershey, which has the licence to produce Cadbury products in the US, “fails to disclose” that some of its chocolate products “contain unsafe levels of lead and cadmium”

i knew always had acideic taste to it. i dont like milk chocolate, i choose other brands for dark chocolate with 90% +cacao