Are you claiming there is a higher occurrence of cancer among anesthesiologists, and that it's linked to the drugs they administer?

Not me.

"Despite questions about design issues or selection bias in some studies, the weight of the evidence regarding potential health risks from exposure to anesthetic agents in unscavenged environments suggests that clinicians need to be concerned. Moreover, there is biological plausibility that adds to the concern that high levels of unscavenged waste anesthetic gases present a potential for adverse neurological effects or reproductive risk to exposed workers or developmental anomalies in their offspring (Cohen et al. 1980; Rowland et al. 1992)."