Unusual southerly winds recently have covered the islands with VOG - volcanic haze. It was bad enough yesterday that I could taste the sulfer in the morning air. This VOG will adversely affect some people with breathing problems. It may be that Rush experienced chest pains or the onset of a heart attack as a result of the VOG.
Are you sure that wasn't DOG (Diarrhetic Obama Gas) instead? :D
Good to hear the ditto-man is on the mend.