Need info on Avian bird flu disease!!

Is it true that people who are obese are more prone to the disease
bird flu? One of my friends told me so yesterday. . I knew that obese
people have the risk of getting many diseases but bird flu...I didn't
know this. In fact she told me that it is better if fat people as
precaution take the medicine called tamiflu so that we do not catch
this disease. She has already ordered it from an online pharmacy and
gave me the address too http://www.drugdelivery.ca/bird-flu.aspx and
told me to order quickly since there is not much of it in the stock.
Is there any truth in whatever she told me?