I have found probiotics help your body fight off the cold and flu faster than anything. Plus it helps with weight loss also and sniffling and sneezing is all part of the work I do. I work for the department of agriculture grain inspection im in grain dust daily in grain bins and on the missippi river all the time. So yeah colds the flu are all normal things but I still work even though I got a fever of 103 specially in the middle of harvest and 15 degrees with a north wind of 15 to 20.