LITFL go into considerable detail with the fiberoptic bronchoscope.
From CICM, Question 5 from the second paper of 2009 addresses the problem of safely performing a bronchoscopy in an infectious patient.
The major points are detailed in the discussed answer to that question.
For ease of revision, they are reproduced below:
Mehta, Atul C., et al. "American College of Chest Physicians and American Association for Bronchology Consensus StatementPrevention of Flexible Bronchoscopy-Associated Infection." CHEST Journal 128.3 (2005): 1742-1755.
Culver, Daniel A., Steven M. Gordon, and Atul C. Mehta. "Infection control in the bronchoscopy suite: a review of outbreaks and guidelines for prevention."American journal of respiratory and critical care medicine 167.8 (2003): 1050-1056.
.Frumin, M. Jack, ROBERT M. EPSTEIN, and GERALD COHEN. "Apneic oxygenation in man." Anesthesiology 20.6 (1959): 789-798.