No, attempted murder requires specific intent. For the most egregious conduct when they know they are at particularly high risk of being a spreader, even without intent, if someone actually dies, it might arguably be close to depraved-indifference rather than intent-to-kill murder, but more generally negligent homicide if they actually kill people and reckless endangerment, otherwise, would be closer selections from the generically-common American set of crimes. But I’m not arguing they should be criminally liable; saying that an act is not beyond moral blame is not the same that it technically fits — or, even if it does, should necessarily be prosecuted as — a crime.
On the other hand, if someone knows they've been exposed and still behave carelessly, I'm absolutely fine with charging people with attempted murder, endangering the public health, or something similar.
What's the difference between passing this on unintentionally and passing any other virus or disease unintentionally?
Yes, given what is widely publicly known about the disease, I can very easily blame people who are involved engaging in high-spread-risk behavior despite being a-(or, more likely if they are actually spreading it, pre-)symptomatic and who are thereby spreading the virus they don’t know they have.