I really don't know the answer to why I have contracted this again? I don't use deodorant. And if I did it would be natural. Usually when someone gets pleurisy. Which is the inflammation of the lung lining. It is accompanied by some kinda lung problem..Lung infection or pneumonia or the flu anything? but I have none of that. Not even an infection. So hmmm they even did an xray couldn't find a darn thing wrong with my lungs. I was only advised to take pain killers and strong motrin and wait it out. And as much as i hate the presription drugs I had to take them because to have your lungs rub against your ribs is EXTREMELY excruciating and VERY painful. I had to take 2400mg of ibuprofin in a 5 hour period last nite and still i could feel the pain and had some difficulty. YOu are only advied to take 800 mg per 8 hours.. that is just to show you how much pain i was in.