That's why they have to swab your brain with antifreeze to get the PCR test sample
https://images-na.ssl-images-amazon.com/images/I/61REdGzB4hL._SX522_.jpg
https://www.nejm.org/na101/home/literatum/publisher/mms/journals/content/nejm/2020/nejm_2020.382.issue-22/nejmvcm2010260/20200522/images/img_medium/nejmvcm2010260_f3.jpeg
https://www.epa.gov/sites/production/files/2016-09/documents/ethylene-oxide.pdf
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