Here are a couple of sources to consdier.Danny W:
Hi, so new here, hey...I am an asthmatic and was always told I couldn't scuba, is that true? And I'm a budding horologist and looking to specialise in dive watches, even getting pieces pressure tested for you....please look at my heimdallr with sharkskin strap and my 3 seiko 200m dive watches....find me here. https://www.vinted.co.uk/member/221833052-dan2494 And can someone please let me know about the asthma thing, I thought now, with full masks and no need for a regulator, the asthma issue would be resolved....
Quote Link Edit
Asthma and Diving
Asthma is a disease characterized by narrowing of the breathing tubes. Read about the risks for divers, complications and treatments.
dan.org