Final answer:
A normally harmless product can become dangerous through misuse, as in the case of improperly handled paint remover leading to fire, or exposure to pesticides without proper protection. Genetically modified foods are generally considered safe, and factors like bioaccumulation can make substances harmful over time.
Step-by-step explanation:
A product that is normally harmless to humans and pets could have killed a girl through various mechanisms. One such scenario is when products are misused or mishandled, such as the case with the paint remover and flammable liquids described in one of the provided cases.
Improper usage or storage might lead to unintended exposure or accidents. Similarly, in the instance of pesticides discussed in another case, even if they are intended to protect crops, they can be hazardous to humans and other animals if ingested, inhaled, or absorbed through the skin.
When it comes to food safety, there are questions around whether genetically modified foods might have unknown harmful effects, although current scientific consensus suggests that they are safe to eat.
Furthermore, the concept of bioaccumulation, as mentioned in relation to the environmental impact of DDT, highlights how toxins can build up in an organism over time, potentially leading to harmful effects if enough of the toxic substance accumulates.
It is important to note that chemicals and products considered safe under normal conditions can become dangerous under specific circumstances, such as in the presence of vulnerable individuals, through excessive exposure, or when combined with other chemicals, leading to toxic reactions.
Therefore, proper handling, clear warnings, and user education are vital for preventing such tragic outcomes.