I'm posting this for a friend. All info I have that it's approx a 5 ft bush. Don't know location. Parent trying to rule it out as possible trigger for asthma attacks in her children.
Looks like Pineapple Guava to me too. I did some looking around, and it seems if the children are allergic to pollen, then possibly so, otherwise they would probably have to ingest the fruit and have an allergy to guava.