The pink flower that smells like onion is the Allium roseum, also known as the Rose Onion or Pink Garlic.
This flower belongs to the same family as onions, garlic, and chives, and it shares a similar pungent aroma.
While the Allium roseum has a distinct onion-like scent, it is often used in ornamental gardens for its beautiful pink blooms.
The flower stalks are tall and slender, topped with clusters of star-shaped pink flowers that bloom in late spring or early summer.
The Allium roseum is a hardy and adaptable plant that thrives in well-drained soil and full sun.
It is also a popular choice for attracting beneficial insects like bees and butterflies to the garden.
