After his grave, very hurty medical condition was shared with the Internet, my manly spouse modified his official position on Crouton Lung. To quote: "I didn't mean the WHOLE crouton. They were really big croutons. It was like a piece. A SHARD."
So, there you have it: he is suffering from Crouton Shard Lung, okay? I'll be adding a PayPal button in the coming days so that we may accept donations for his medical treatment, which includes, at your kind recommendation, costly bronchoalveolar lavages of warm, clarified butter and Newman's Own Salad Dressings. Tasty.