Workplace air quality can be lowered due to factors from high or low humidity to sick building syndrome. If the air is too dry, it may be because hot office computers dry the air but humidifiers can’t be used, at the risk of causing mold. Also, modern office construction is airtight, and is as likely to trap spores inside as it is outside, especially if the filtration systems are not regularly maintained. Fresh air is trapepd outside and contaminants can be trapped inside.
If you’re in California, you might want to give us a call and see about getting an assessment from Byebyemold.