MAC contagious question

Chronic inflammation is a recently recognized factor in cardiovascular disease. Here is an article I bookmarked a few years ago when my cardiologist mentioned the connection:
https://pmc.ncbi.nlm.nih.gov/articles/PMC8315628/
Here is the opening paragraph:
"Inflammation constitutes a complex, highly conserved cascade of molecular and cellular events. Inflammation has been labeled as “the fire within,” is highly regulated, and is critical to host defense and tissue repair. In general, inflammation is beneficial and has evolved to promote survival. However, inflammation can also be maladaptive when chronically activated and sustained, leading to progressive tissue injury and reduced survival. Examples of a maladaptive response include rheumatologic disease and atherosclerosis. Despite evidence gathered by Virchow over 100 years ago showing that inflammatory white cells play a role in atherogenesis, atherosclerosis was until recently viewed as a disease of passive cholesterol accumulation in the subendothelial space. This view has been supplanted by considerable basic scientific and clinical evidence demonstrating that every step of atherogenesis, from the development of endothelial cell dysfunction to foam cell formation, plaque formation and progression, and ultimately plaque rupture stemming from architectural instability, is driven by the cytokines, interleukins, and cellular constituents of the inflammatory response. "

Isn't it amzing how inter-connected every facet of health and well-being is?

From what I have read only people with certain health issues can contract MAC. Lung problems and immune disorders.

And then there are people like me who have no lung problem history, strong immune system, healthy, active, rarely ever sick, no medications and we get it. Go figure.

I'm talking about coughing on anybody, not just healthy people. My wife got MAC after sitting next to a hacking cougher on a plane, but they say not communicable.