I can imagine a world where this person could be either ostracized in fear of associating with someone who was punished by the gods, or potentially thought of as immortal or magical and even revered, as someone who withstood the wrath of Zeus.
Thanks for any insight.
You're a fairly accurate in your assumptions. People who were struck by lightning were known as diobletoi or those "smitten by Zeus" and did indeed receive special treatment in terms of how they were buried and their level of reverence. If someone was struck by lightning it was perceived as an exceptional honour to be marked out by Zeus in this manner and has been suggested that the bodies of diobletoi were revered as providing "special blessings to the community in which their body resided". Importantly, these people were not buried or cremated according to traditional ancient Greek custom: prothesis, laying out of the body and lamentation; ekphora, conveyance to the burial site outside of the city walls, and interment followed by feasting. These rituals ensured the safe passage of the soul to Hades and the ritual purification of the family so they could reintegrate into society, however the bodies of diobletoi were seen as exceptional, almost sacred, for having been singled out by Zeus and required special treatment. Instead, they were either buried where they were struck as suggested by Zuntz, or were given a special cordoned off area where their body lay untouched as claimed by Plutarch in Moralia. Plutarch also comments on the perceived incorruptibility of those who are struck by lightning, in this passage that kinda reminds me of Harry Potter :p
"But this reason for [Mithradates Bacchus'] surname is a vain fancy and an idle story; for whilst he was an infant a flash of lightning burnt his cradle, but did his body no harm, and only left a little mark on his forehead, which his hair covered when he was grown a boy; and after he came to be a man, another flash broke into his bedchambers, and burnt the arrows in a quiver that was hanging under him; from whence his diviners presaged, that archers and light-armed men should win him considerable victories in his wars; and the vulgar gave him this name, because in those many dangers by lightning he bore some resemblance to the Theban Bacchus."
There are some instances of people being struck by lightning in myth such as Euripides' Alcestis and a few instances where it is believed that someone has received special burial as a result of being struck by lightning as asserted by Zuntz and while evidence (inscriptions in what are known as the 'gold leaves') seem to provide suggestive evidence we cannot know for certain if that was the case. It would be safe to say however that in every instance where someone was struck by lightning it seems clear that they/their body received special treatment and reverence.
*** Sources: Robert Garland, The Greek Way of Death 2nd ed. Ithaca: Cornell University Press, 2001. E. Rhode, Psyche: the Cult of Souls and Belief in Immortality among the Greeks. Trans. W. Hillis. London, 1925. Gunther Zuntz, Persephone: three essays on religion and thought in Magna Graecia. Oxford: Clarendon Press, 1971 Plutarch, Moralia Euripedes, Alcestis