I found this community only because I'm also taking part in a 5-week smoking cessation class that started on January 7th. The booklet they gave us is from Mayo Clinic and it referenced BecomeAnEX as a support source. Best decision I made (after deciding to quit smoking) was joining this group.
Anyway...during the first class, we all exhaled into the Smokerlyzer to get a carbon monoxide (CO) reading. There are only three of us in this class, but I "won" with the highest score among us at 17. This indicated that I was likely consuming just around a pack of cigs per day, which was right on the money.
I missed class last week when they tested again, but we did it today. Since I've been smoke-free for 11 full days, I fully expected my reading to go down, but I wasn't sure what it would clock in at.
And my reading was.....................
Happy, happy dance. My blood has more oxygen now!!!
UPDATE ON 2/4/2020:
Today was our last class. We did the Smokerlyzer again and this time my reading was.........