I felt somewhat vindicated when this post appeared at The Conversation warning of hazard reduction burns smoke during the early pandemic. Correlation links had already been found between covid19 severity, increased mortality and higher levels of pollution.
See: Pandemic ponderings: Indications that High levels of Air Pollution exacerbate Covid19 spread (virus may be airborne) (March 26, 2020) and Pandemic Ponderings: US study finds Air pollution link to Covid19 deaths (April 8, 2020)