Did he do breathing without a barrier? I was a life guard and guard instructor for ten years — many of my students went on to become EMTs and other first responders. Anytime rescue breathing is involved — a barrier is usually used, and now data has proven that compressions can be done without rescue breathing.
Still, like most have said — EMT’s gonna be fine unless he’s in bad shape (doubtful) to begin with.
“now data has proven that compressions can be done without rescue breathing.”
That is for laymen rescuers who may not be fully proficient. Chest compressions allowing adequate chest rise on an adult to a max depth of 2.4 inches allows for adequate profusion of blood with some gas exchage occuring in the lungs due to compressive effects on the chest.
However, if properly trained and having an oral mask or a barrier or if a bag mask is available, 30 chest compressions to two ventilations is still preferable if able to perform the procedure as a single rescuer.
If not fully proficient in rescue breathing, do 2 minutes of chest compressions, call for help, and keep doing chest compressions as able until help gets there. Good efficiently performed chest compressions maximize perfusion of at least partially oxygenated blood and is often better than sloppily done cpr with poor rescue breathing especially if one is alone. If in a public place call for an AED.
That is a myth. I have see. plenty of healthy going people end up in ventilators and even die from covid. The odds are not high but if you are one of the unlucky ones it is 100% for you....