Tea Tree will NOT cause you to cough.
However any member of the Sulfate family can cause a person to cough when a detergent gets atomized into fine airborne droplets. That includes Sodium Laurel Sulfate, Ammonium Laurel Sulfate, and Magnesium Laurel Sulfate, etc.
Sulfates are safe to work with. Sulfates are found in hand soap, hair shampoo, even toothpaste. However Sulfates are an irritant to mucous membranes, much the same way that hair shampoo burns when it gets in your eyes.
There are a couple of options...
1. Use a coarse tip sprayer - .06 or larger. That's simple.
2. Or use a shower feed system - such as a Cimex or a rotary with a tank.
We have looked into formulating
Releasit with non-sulfate alternatives. We have also looked into backing off and developing a milder detergent package. Neither of these options have yet to give us the performance we're looking for in a
Releasit product. So rather than wimping out the formula, we recommend that people use Encap-Clean as it's intended --- with a shower feed, or with a coarse tip sprayer. And for most folks that's not a big deal.
BTW, if you're interested in trying out a product that doesn't contain any Tea Tree extract, you might want to give Encap-Basic a whirl. It's a cost-effective "price point" entry that's designed to target low budget requirements. In spite of its bargain pricing, it still cleans well and it crystallizes like a champ. It's just cheaper to work with.
http://www.excellent-supply.com/store/p ... roduct=302
.