Build a do-it-yourself home air purifier for about $25
I have found this on amazon seems like someone is already build a complete prototype.
<a href="https://www.amazon.in/Smart-Air-DIY-Purifier-White/dp/B01CP55QXS/ref=pd_sbs_79_2?_encoding=UTF8&pd_rd_i=B01CP55QXS&pd_rd_r=979f7ddc-e969-11e8-8bb0-a509d9a0f381&pd_rd_w=fULSI&pd_rd_wg=QMAYi&pf_rd_i=desktop-dp-sims&pf_rd_m=A1VBAL9TL5WCBF&pf_rd_p=9fc668a0-2aac-4fb6-970f-606919bc0185&pf_rd_r=QA1DHXPWYMCWEE2HCYPG&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&psc=1&refRID=QA1DHXPWYMCWEE2HCYPG" rel="nofollow">https://www.amazon.in/Smart-Air-DIY-Purifier-White/dp/B01CP5...</a>