Are the benefits mentioned in Ibn al-Qayyim's text, such as removing warts, preventing vomiting, and purifying the head, attributed to the onion or its seeds?

His statement in this paragraph: "And with salt, it removes warts" is about onions with salt, coming after he mentioned the individual benefits of onions, then the benefits of its seeds. As for what follows, it is about onions when sniffed, then when snuffed, and then when drops are instilled from it.