"...person who identified a common bacteria..." (Barry Marshall)

Helicobacter pylori is also a suspect carcinogen, specifically in some stomach cancers. I am now wondering if it assists this evil fungus in any indirect way. Over half the world population carries h pylori, apparently mostly asymptomatically.

Is there a non invasive way of getting tested for it?

There's the poo test and a breath test.. beyond that I'm unsure. The breath test seems less available, maybe. Consider the following before alarming yourself though. H pylori, if asymptomatic, may be at a level of what some in the medical field deem best left alone. The goal in some treatments seems to beat it down rather than eradicate it. Rationale seems to weigh cost\benefit of slaughtering all the good stuff to get the bad when the bad might not do much beneath a threshold. I'm no authority. The subject, I do think is worth reading about and it doesn't appear there's a clearly advised plan for the infected asymptomatic majority.

For H Pylori, there are 2 tests that are both pretty easy: one is a blood test and the other is a breathing test (they collect the exhalation in some bag.) The results are returned fairly quickly