I am brewing a California Style Ale and used Wyeast 1056 yeast and the yeast nutrient I have had to change my airlocks 5 times in the last 5 days. It is really fermenting and my airlocks are getting clogged. But it is really smelling good, really hoppy. I santize the airlocks each time i replace them. Is there a chance of infection. I guess i will use a blow off from now on.
I wouldn't worry too much about it getting infected.
I would try to use a larger fermenter, or make slightly smaller batches, and if you're fermenting at higher temps, better temperature control. For Wyeast 1056 I would try to keep it in the 60-66F range.