Thanks.If you use a kitty litter scoop to clean the sand, its not bad. You can also use the Sweet PDZ additive to help with any smell. I changed from the shavings to sand because it was less stinky at our house. I'm sure it all depends on the other variables in the setup as well. When I changed from a standard waterer to a water bottle with a nipple, the smell went way down from the reduction in water spillage.
I'm really sorry you are allergic to your chicks. The amount of dander they can produce is amazing! I hope you feel better soon.
I used a litter scoop and the sand was dry as a bone, but it still stunk to high heaven. I just couldn't take it. I might try the Sweet PDZ in the future, but for now I am back to pine shavings and that helps dramatically.