<human>: Hey /r/relationships. Not a regular reader of this sub, but I'm out of options and you guys seem pretty on the ball.

The guy (30ishM) in the cube next to me is a great guy. Married, 1-year-old daughter, smart, gets his work done and does it well. We get along pretty well. No one else would have any complaints either except, well...

This guy coughs and clears his throat loudly every minute or so, every single workday. It's at the point where the people who have actual offices close their doors whenever he's at his desk. It's driving the people in the cubes around us insane. I've got a fan running and ambient music through headphones and it's still distracting.

We're good enough friends that I've brought it up a couple times. I asked him if he had allergies and suggested he talk to his doctor or pick up some Claritin or something. Obviously I didn't tell him that the rest of our coworkers are ready to strangle him, but I thought he might take the hint.

Nope. The problem is, he's an immigrant from China and I guess his family isn't real keen on anything but traditional/herbal remedies. When he told me that I said kind of jokingly, "Well it's not working!" I think he got that I wasn't really kidding, but brushed the issue off. 

He hasn't done anything about the cough since then, but our coworkers (all women) have begged me, as the one other guy in the department and this guy's closest work friend, to step in again. Based on conversations with them I know that they're legitimately angry with this guy, which isn't surprising since the noise is nonstop. I've been counting, and he's done it twenty-two times since I started writing this post. That's more than once a minute.

How do I approach this in a nice, culturally sensitive way?

Give me a shortened version of the text
<bot>: Coworker from China keeps coughing and won't try anything but traditional medicine that doesn't work. Rest of the department is ready to kill him. What do I do?