Because 99% of "taste" is actually smell. If your nose is bunged up and you can't smell then you can't taste either.
Yeah I know, but its still cruel. Had fever, headache, muscle pain coupled with non stop sneezing / nose blowing. And THATS when I get the free bag of haribo. How ironic is my life? Ok I'm exaggerating a bit.
Also, your tongue can't taste anything at all without saliva, if you have flu and your mouth is dry then thats another reason you won't taste them very well.
mmmmm I lurrrrrrrrrrve haribos!!!
__________________ No man is worth your tears, but once you find one that is, he won't make you cry G_ F_CK Y__RS_LF - Would you like to buy a vowel??