Would you have your SO get the test?

I did genetic testing and found out I’m a carrier of cystic fibrosis and they recommended getting my husband checked too to see if he is also a carrier (because baby can only get cystic fibrosis if he’s a carrier too). Doctor said they weren’t too worried about it all since we have a one year old together who doesn’t have it which shows that he most like doesn’t have the cystic fibrosis gene. I asked if he would get tested (for the just in case) but he’s deathly afraid of needles (like he full on cries and has a panic attack) and he refuses to get his blood drawn to find out. Is he being selfish in a way for not wanting to find out if he carries it? Or do you think he doesn’t have the gene since our son doesn’t have it?