So...
The last couple of years, there have been some carbon dioxide gas shortages, mainly around Europe and Mexico.
CO2 shortage explained: Why Europe and Mexico are running out of the gas and what that means for Canada
- 2018
https://nationalpost.com/news/world/why-theres-a-co2-shortage
CO2 shortage ‘could happen again’
- 2019
https://nationalpost.com/news/world/why-theres-a-co2-shortage
(it didn't, at least not in 2019)
But, then the outbreak hit.
Over in North America, the CGA (Compressed Gas Association) issued a press release on March 20th, letting everyone know how important they were and that the CGA and it's members were "Essential", and that everyone relies on them.
Press Release: Medical Gas Manufacturing and Distribution Are “Essential” to Respond to COVID-19
https://www.cganet.com/cga-release-medical-gas-manufacturing-distribution-declared-essential-to-covid-19-response/
Original message details are unavailable.
Therefore, state and local officials should ensure that the medical gas manufacturing and distribution model continues without interruption to safely and efficiently reach patients in the response to COVID-19.
It's not a threat.
A week later, the CGA signed an "Industry Letter" proclaiming themselves along with other industries who signed, as "Essential", with demands that their operations not be hindered by any covid regulations.
https://www.cganet.com/us-industry-calls-for-consistent-critical-infrastructure-definition/
Another week later, the CGA leads a coalition warning the Vice President of a risk of a "carbon dioxide shortage"
Industry Coalition Sends Letter to U.S. Vice President Warning of Risk of Carbon Dioxide Shortage
https://www.cganet.com/industry-warns-risk-of-carbon-dioxide-shortage-in-us/
Basically a "we want you to make our industry more profitable, if you don't there will be a carbon dioxide shortage" letter.