Mold is shown in the house of a Marine and his family whose home suffered severe damage post-Hurricane Florence at Marine Corps Base Camp Lejeune, North Carolina, U.S., September 27, 2018. Picture taken September 27, 2018. REUTERS/Andrea Januta

A moldy cupboard is shown in the house of a Marine and his family whose home suffered severe damage post-Hurricane Florence at Marine Corps Base Camp Lejeune, North Carolina, U.S., September 27, 2018. Picture taken September 27, 2018. REUTERS/Andrea Januta

Pre-consumer food waste is stockpiled before being feed to black soldier fly larvae at the Enterra Feed Corporation in Langley, British Columbia, Canada, March 14, 2018. Picture taken March 14, 2018. REUTERS/Ben Nelms

Volunteer Johnny Ziomek helps clean a amoldy drywall from the walls of a flooded home in the aftermath of tropical storm Harvey in Katy, Texas, U.S., September 8, 2017. REUTERS/Mike Blake

Volunteers help clean a moldy drywall from the walls of a flooded home in the aftermath of tropical storm Harvey in Katy, Texas, U.S., September 8, 2017. REUTERS/Mike Blake

A Texas flag and a cross hang on the wall of a flooded and now moldy garage wall in the aftermath of tropical storm Harvey in Katy, Texas, U.S., September 8, 2017. REUTERS/Mike Blake

A snail sits on oranges, after the first rain in Jizeen, southern Lebanon November 1, 2016. REUTERS/Ali Hashisho TPX IMAGES OF THE DAY

Marie van Borstel performs as Moldy Peach during the German Air Guitar Championship in Berlin July 14, 2012. The current German champion will compete in the World Championships held in Finland August 24. REUTERS/Thomas Peter (GERMANY - Tags: ENTERTAINMENT SOCIETY)

Libya's Mohamed Moldi (R) fights for the ball with Ukraine?s Andriy Voronin during their friendly pre-World Cup soccer match at the Volksstadion in Gossau, June 5, 2006. WORLD CUP 2006 PREVIEW REUTERS/Siggi Bucher (SWITZERLAND)