Can diabetes make cold symptoms worse?

I was diagnosed with type 1 diabetes in October 2008. Three times in the last two winters I thought I was getting the flu, but my flu-like symptoms passed in 24 hours or less. I had never had a 100+ degree fever and body aches without having the flu before these three times. Is it possible that diabetes is making my cold symptoms worse, or do you think it's just a coincidence? Or do you think maybe I have had the flu once or twice and just fought it off quickly?