What is the ruling on using a perfume that bears a name taken from ancient Greek beliefs and means "god of love"? And should it be disposed of, or is it permissible to sell it, or buy it again?

The use of the perfume you bought is not forbidden, and you are not obliged to discard it, merely because its commercial name means “god of love” to some disbelieving nations. This is because the name is not intended or venerated. It is permissible to buy and sell such perfumes, as the original ruling is permissibility. This is also because what is intended by the contract is not the name, and what is secondary follows the primary; something not intended is not singled out for a ruling. The name has simply become a brand.