The good things that were trade, was food. Also clothing and cool new gadgets. Other things that were traded in a good way were new ideas and inventions. As you can see there were many good things traded int the Columbian Exchange.
Bad things that were traded was disease. Now disease wasn't traded on purpose, but it still got traded in a way.Other bad things that were trades accidentally was pests. Pests are rodents and bugs like roaches and rats. So as you can see many bad things were also traded.
In conclusion, the Columbian exchabge wasn't all good. In fact a lot of it was bad. In all the good and bad factors were pretty equal.