The Japanese health ministry has asked Kobayashi Pharmaceutical to formulate and submit a plan by Saturday to investigate the 76 deaths that remained under suspicion
The police had already increased the number of security cameras in the cities of Wajima and Suzu.
As of 11:00 a.m., the smell was still present, with a possibility of a gas leak not ruled out.
The athlete left a note at his hotel saying he wanted to work in Japan before buying a train ticket to Nagoya.
Meanwhile, U.S. warships carried out freedom of navigation operations.
About 80 percent of people in Japan do not want the Games to be held this summer.