No, Brian is not getting "happy gas" at the dentist office, he is modeling today's tool of the day - the MSA model 1400 OSHA approved respirator mask with dual positive flow filters (rated for 5 microns). This little number is great if you have some drywall to sand and you would prefer not to taste dust for the next 3 days. Brian also recommends this mask for anyone who happens to be changing Spencer's diapers!
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