Final answer:
A drug or container with filthy or decomposed substance is considered contaminated and a biohazard due to potential health risks. The references highlight the dangers and regulations associated with biohazardous waste.
Step-by-step explanation:
If a drug or container contains filthy, putrid, or decomposed substances, it would be considered contaminated and potentially hazardous to health. This description fits the definition of a biohazard, as it could contain biological material that is harmful to humans or other forms of life, analogous to waste that releases contaminant substances into the environment. Regulations dictate that any chemical waste should be unused and in the form of a commercial chemical product to prevent such hazards, emphasizing the risk of diseases spreading through contaminants.
The provided references paint a vivid picture of the hazards associated with unclean and decomposing material, whether it be the foul stench emanating from waste dumps in urban settings or the 'smouldering unclean yellow' described in a piece of literature. These examples underscore the importance of proper waste management and the potential dangers of exposure to contaminated substances.