moldy pink liquid in glass jar drips onto white surface, decomposition process. decaying substance poses health risk, bacterial

mold moldy pink liquid glass jar drip surface white decomposition decay decaying substance bacteria bacterial contamination unhealthy canned food spoilage rotten jam sauce expired safety hazard danger illustration biohazard biohazardous material slime greenish disease illness health risk toxic poison virus germs microbiology biology science experiment sample laboratory research analysis medical