A mildly Covid-y Lorien tells Katharine how the first five minutes of one episode of ER scarred her for life.
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https://www.cdc.gov/dotw/carbonmonoxide/index.html
https://www.mayoclinic.org/diseases-conditions/carbon-monoxide/symptoms-causes/syc-20370642
https://www.texastribune.org/2021/04/29/texas-carbon-monoxide-poisoning/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5848400/
https://myhealth.alberta.ca/Health/Pages/conditions.aspx?hwid=hw193731
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https://getjerry.com/home-insurance/can-opening-a-window-stop-carbon-monoxide-poisoning
