This plant is also known as Devil’s Ivy, so maybe the hint is in the name? But, although this plant can be poisonous, it is known for being one of the best plants for removing impurities from the air. Luckily, it is only mildly harmful in small quantities, but can be serious in larger quantities.
Symptoms in humans: Burning of the mouth, skin irritation, swelling of lips, tongue, and throat, vomiting, and diarrhoea
Symptoms in cats and dogs: Drooling, choking, swelling of mouth and tongue, difficulty breathing, and stomach upset. Can lead to renal failure and/or death.
4. Peace Lily
Surprisingly, the peace lily is not a member of the Liliaceae family and therefore not a true lily. But it can be poisonous.
Whilst it does make a great air purifier and is ideal for apartments or rooms with little light, it can cause death if ingested by either humans or animals.
Symptoms in humans: Burning and swelling of lips, mouth, and tongue, difficulty speaking or swallowing, vomiting, nausea, and diarrhoea.
Symptoms in cats and dogs: There is some conflict here, but symptoms recorded are burning mouth, excessive salivation, diarrhoea, dehydration, lack of appetite, and vomiting. Left untreated, peace-lily poisoning could lead to renal failure.