Final answer:
Household chemicals, when used incorrectly, can cause inhalation burns, damage skin and eyes, and poison if swallowed.
Step-by-step explanation:
When household chemicals are used incorrectly, they can cause several harmful effects. They can cause inhalation burns if the fumes are directly inhaled. They can also damage the skin and eyes if they come into contact with them. Additionally, some household chemicals can poison a person if swallowed.
Learn more about Harmful effects of household chemicals