I smell something strange, sort of like blood, and i m dizzy. It s happened many times before after exposure to heat (hot showers, usually), in which case i can no longer see at all. I then sit down and close my eyes to regain my vision. Right now i have been in an air conditioned room, so there s no heat involved. If I cover my right ear, it makes a ringing sound, which i assume is because i went to a loud concert last night. Now I feel lightheaded and, as i stared before, i smell blood. Should i be worried?