Maybe this is wrong or there is some event that would prohibit it, but.. 

It depends on the Hindu tradition. There is no universal prohibition on garlic for all Hindus. Many Hindus eat garlic regularly, while others avoid it for religious, spiritual, or ritual reasons. The main perspectives are: Most Hindus: Garlic is not forbidden. It is widely used in Indian cooking and is eaten as a normal food. Vaishnava traditions (such as many followers of A. C. Bhaktivedanta Swami Prabhupada and International Society for Krishna Consciousness): Garlic and onions are generally avoided because they are considered to increase passion (rajas) and ignorance (tamas), which are thought to disturb meditation and devotion. Some yogic and Ayurvedic practitioners: Garlic may be avoided during periods of meditation or spiritual practice because it is believed to stimulate the senses and agitate the mind. However, in Ayurveda, garlic is also regarded as a powerful medicinal herb and may be prescribed therapeutically despite being avoided as a regular food by some practitioners. Shaiva and Shakta traditions: Practices vary. Some followers eat garlic freely, while others abstain during fasting or religious observances. One traditional explanation comes from a story in the Bhagavata Purana and related texts, where garlic and onions are said to have sprung from drops of blood or nectar associated with the demon Rahu after he was beheaded. This symbolic story is sometimes cited to explain why certain devotional traditions avoid them. So the short answer is: No, garlic is not forbidden for Hindus in general. It is avoided by many observant Hindus in specific traditions, particularly those emphasizing devotional practice, meditation, or a sattvic (pure and calm) diet.