It is said that it is to buy a bed and get a bedside table and wardrobe, why does the wardrobe smell

I don't know what kind of wardrobe this is for. Normally, a wardrobe is much more expensive than a bed. Have you ever heard of buying gloves and giving rings? Put the cart before the horse, hehe.

How to distinguish between solid wood and plywood: look at the end of the board. What is an end?

It's a piece of wood, a long one, with two ends. Look at the cross-section of the end, if the cross-section is a natural wood grain, it is solid wood, if it is pasted with something, or sprayed with something, you can't see the natural wood grain, or the wood grain at the end and the wood grain of the plank plane are not connected, it is not solid wood.

It has a taste, maybe consider using some bamboo charcoal or something, and suck it up

I'm almost sure that your wardrobe is a tin or sticker wardrobe, and the general solid wood wardrobe has a faint wood aroma, but also unusually heavy, and then there are some natural flaws. For the same piece of solid wood, whether it is a plank or a strip, the natural connection between the longitudinal section and the cross-section should be clearly visible in the wood grain at the interface between the two intersections. If not, it's generally a veneered wardrobe.