Your video about the SCD41 CO2 sensor has some glaring errors! The implication is that this sensor can be used to monitor the environmental impacts of CO2 as observed in outdoor air. Considering that global annual mean CO2 is about 424 ppm (the lower measurement range is assumed by Sensirion to be 400 ppm), is increasing annually by about 3 ppm, and varies between summer and winter by less than +/- 10 ppm, such a claim is nonsense. You stated that the repeatability is +/- 10 ppm – about he same as winter/summer variability. You have stated that the accuracy is +/- 50 ppm. This is not true, as the accuracy for outdoor and most indoor\ locations is given by Sensirion as +/- 50 ppm +/- 2.5% of the measured value!
Finally, the person making the video said that 8 million people in the world were exhaling CO2. Probably just a slip of the tongue, but the number is 8 BILLION.
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Thanks for the heads-up!