A worker disinfects shisha, amid the outbreak of the coronavirus disease (COVID-19), at al-Faisaliah Cafe in Baghdad, Iraq, October 14, 2020. The familiar sound of bubbling waters and clouds of cherry-flavoured smoke once again fill a coffeeshop in the Iraqi capital, as customers return to their favourite pastime - smoking shisha. REUTERS/Thaier Al-Sudani

A worker smokes shisha to prepare it to customers, amid the outbreak of the coronavirus disease (COVID-19), at al-Faisaliah Cafe in Baghdad, Iraq, October 14, 2020. For many months, coffee shops in the Iraqi capital were eerily quiet, with concerns over the coronavirus and a lockdown keeping customers away. REUTERS/Thaier Al-Sudani

A worker disinfects shisha, amid the outbreak of the coronavirus disease (COVID-19), at al-Faisaliah Cafe in Baghdad, Iraq, October 14, 2020. Since publishing the video of his technique on social media, Iraqis slowly began returning to the cafe, where they spend their nights smoking and enjoying boardgames. REUTERS/Thaier Al-Sudani

A worker prepares shisha for customers, amid the outbreak of the coronavirus disease (COVID-19), at al-Faisaliah Cafe in Baghdad, Iraq, October 14, 2020. REUTERS/Thaier Al-Sudani

People smoke shisha, amid the outbreak of the coronavirus disease (COVID-19), at al-Faisaliah Cafe in Baghdad, Iraq, October 14, 2020. REUTERS/Thaier Al-Sudani

People smoke shisha, amid the outbreak of the coronavirus disease (COVID-19), at al-Faisaliah Cafe in Baghdad, Iraq, October 14, 2020. REUTERS/Thaier Al-Sudani