Ozone is an extremely harsh disinfectant chemical, and it's dangerous to say it's not. Various regulatory agencies in the USA set prolonged exposure limits at about 0.1ppm. [1] The USA's National Institute for Occupational Safety and Health has set its Immediately Dangerous to Life and Health (IDLH) concentration for ozone as 5ppm.
This study you've linked examines the disinfectant power (against Pseudomonas aeruginosa) of ozone at a concentration of 400ppm. If somebody who's been told that ozone is not a harsh chemical decides to open that airtight container and smell the sanitation, they might get a whiff of ozone so concentrated that doctors around the world will be talking about the resulting injury.
Even if you're careful not to do that, opening the container may cause a significant and harmful elevation of ozone concentration in the room if this is done indoors.
This study you've linked examines the disinfectant power (against Pseudomonas aeruginosa) of ozone at a concentration of 400ppm. If somebody who's been told that ozone is not a harsh chemical decides to open that airtight container and smell the sanitation, they might get a whiff of ozone so concentrated that doctors around the world will be talking about the resulting injury.
Even if you're careful not to do that, opening the container may cause a significant and harmful elevation of ozone concentration in the room if this is done indoors.
[1] https://www.epa.gov/indoor-air-quality-iaq/ozone-generators-...
[2] https://www.cdc.gov/niosh/idlh/10028156.html