It sounds more like a respiratory infection. Pine shavings vary a lot by manufacturer. I try to use the larger shavings from a local farm store, since the fine ones are too dusty for chicks. You may need to try different brands to find a good one. Most farm stores have the 2 types available...
Sneezing can be common with chicks if there are dusty conditions or dusty feed or an ammonia odor, but rales are a symptom of respiratory diseases. The first signs are usually eye and nasal drainage though. Are you sure it's rales? Have they been around older birds at your place or another...