Indian J Chest Dis Allied Sci. 2004 Jan-Mar;46(1):55-8.
Accidental condom inhalation.
Arya CL, Gupta R, Arora VK.
Jaswant Rai Speciality Hospital, Meerut, India.
A 27-year-old lady presented with persistent cough, sputum and fever for the preceding six months. Inspite of trials with antibiotics and anti-tuberculosis treatment for the preceeding four months, her symptoms did not improve. A subsequent chest radiograph showed non-homogeneous collapse-consolidation of right upper lobe. Videobronchoscopy revealed an inverted bag like structure in right upper lobe bronchus and rigid bronchoscopic removal with biopsy forceps confirmed the presence of a condom. Detailed retrospective history also confirmed accidental inhalation of the condom during fellatio.
It's an old paper, but perhaps not well-publicized enough.
I can't really picture how this would happen.